Section 81
SEC. 81. Assessment of the special tax against the real estate affected.&mdashUpon the approval of the special assessment ordinance, the City Assessor shall forthwith proceed to determine the special tax payable by each realty each year during the period fixed in the ordinance, upon the basis of the estimated cost of the work and the total and parcel value of the real estate comprised within the district especially benefited, and shall notify each owner by ordinary mail of the special tax assessed against each property owned by him in the district benefited; but if, upon the completion of the improvement, it should appear that the cost has been less or more, the City Engineer shall forthwith certify this fact to the assessor who shall thereupon proceed to rectify the assessment reducing or increasing as the case may be, the special tax upon each property affected for the unpaid remainder of the annual installments, or, if all are paid, fixing the amount to be credited to or the special additional tax to be collected from the realty, as the case may be, and shall notify the Persons interested of such rectifications.